Zusammenfassung
For the first time, CsP7 was synthesized via a solution reaction in liquid ammonia at low temperatures. The blood-red compound is air and moisture sensitive. The crystal structure of CsP7 was determined by single-crystal X-ray diffraction at 123 K. CsP7 crystallizes in the orthorhombic space group Pbcm (No. 57) with a = 9.0820(2) angstrom, b = 9.4193(2) angstrom, c = 9.65483(19) angstrom, Z = 4 ...
Zusammenfassung
For the first time, CsP7 was synthesized via a solution reaction in liquid ammonia at low temperatures. The blood-red compound is air and moisture sensitive. The crystal structure of CsP7 was determined by single-crystal X-ray diffraction at 123 K. CsP7 crystallizes in the orthorhombic space group Pbcm (No. 57) with a = 9.0820(2) angstrom, b = 9.4193(2) angstrom, c = 9.65483(19) angstrom, Z = 4 and V = 825.93(3) angstrom(3). CsP7 is isotypic with RbP7. The crystal structure is comprised of Cs+ cations as well as one-dimensionally extended P-7(-) chains proceeding along the c axis. The chains consist of nortricyclane-like P-7 cages linked in a linear fashion. Thus, for the very first time, a binary compound containing a polymeric Zintl anion was synthesized by a solution reaction in liquid ammonia.
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